Lads i have. A honda slr 650. Only. 57 thousand km on her. Changed oil. On her. Few week bak bout. 2. Days afta. Changin oil. Tappin came in head so i. Did valve. Clearence. Tappin still dare. Also. Bak firing like. A. Cunt and bogging down wen it hits 130kmh leav off throttle fine gen. Wat wud ye put dis down to lads